Last year’s post on Apple’s revenue breakdown is, by far, the most popular thing I’ve written on this site. Since Apple just announced their quarterly results, I figure it’s time to update the post.

So, here again is Apple’s revenue breakdown over the last several 3rd quarters. I didn’t choose third quarter for any particular reason other than I wrote the post in July. Obviously, Apple’s product release cycles influence their revenue breakdowns: new iPhones, for example, lead to greater iPhone sales in that quarter, etc. So, this isn’t perfect, but it’s a good snapshot. Check it out, in slopegraph form (warning: the zoomed-in graphs are hard to view on an iPhone…I need to work on that. If you’re on an iPhone, just zoom in on this page):

Apple’s Q3 revenue breakdown over the last 7 years, by % total revenue. Click to enlarge or it won’t make a lot of sense.

The big news is the continued ascent of the iPad, which now accounts for over 25% of Apple’s revenue. The iPhone was essentially flat year-over-year, and traditional Macs (portables and desktops) and iPods continued their decline. Note the slight uptick in the iTunes Store: since this number also includes the app stores, my guess is the increase is largely due to the Mac App Store.

To further illustrate how Apple has changed from a “computer” company to a “devices” company, check out the following slopegraph, which plots devices (iPod, iPhone, iPad) vs. non-devices (everything else) over the last 7 July quarters.

Apple Q3 devices (iPod, iPhone, iPad) vs. non-devices (everything else) as a % of total revenue. Click to enlarge.

Notice the big jump in 2009 and 2010, as the iPhone started to take off and the iPad was released. The Mac business, though huge and still growing, is of rapidly diminishing financial importance to Apple.